CN104710093A - Continuous sludge hydro-thermal treatment reaction kettle device - Google Patents
Continuous sludge hydro-thermal treatment reaction kettle device Download PDFInfo
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- CN104710093A CN104710093A CN201510085553.6A CN201510085553A CN104710093A CN 104710093 A CN104710093 A CN 104710093A CN 201510085553 A CN201510085553 A CN 201510085553A CN 104710093 A CN104710093 A CN 104710093A
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- kettle
- water
- inner core
- conservancy diversion
- sludge
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a continuous sludge hydro-thermal treatment reaction kettle device which mainly comprises a kettle body, a kettle cover, an inner guide cylinder, a stirrer and a sludge storage tank, wherein a water outlet is formed in the kettle cover; a sludge inlet, a steam inlet and an oxidant inlet are formed in the upper cover of the inner guide cylinder and are connected with the inner guide cylinder through the kettle cover; the stirrer is positioned in the center of the kettle cover and the inner guide cylinder; the bottom of the sludge storage tank is a conical surface of 30-60 degrees; a sludge outlet is formed in the bottom of the sludge storage tank. Through gravity deposition, sludge subjected to hydro-thermal reaction can be maximally separated from water, and the content of solid granules in water can be reduced, so that the influence of the granules in the water to later processes, pipelines and equipment can be alleviated, and meanwhile the energy consumption can be reduced.
Description
Technical field
The present invention relates to a kind of sludge treatment equipment, particularly one can continuously for the heat treated reactor device of sludge water.Belong to sludge reduction, stabilization, recycling treatment field.
Background technology
Along with China's urban wastewater treatment scale expanding day, sludge disposal problem becomes more and more important.The treatment technologies such as simple landfill, mummification, burning, soil reuse are all difficult to take into account the requirement of the aspects such as environment protection, the utilization of resources and processing cost and are restricted.Sludge anaerobic digestion gas production is considered to the most promising sludge disposal technology and extensively promotes in China, but practice shows, is directly that the digestion process factor of created gase of raw material is low, the residence time is long, economic results in society are not obvious with dewatered sludge.
Mud can be broken born of the same parents by hydrothermal technology for mud fast, be small molecules by macromolecules degradation, organism in solid is dissolved in liquid, thus greatly improve mud biochemical property, kill harmful microorganism simultaneously, realize the stabilization of mud, resource utilization, minimizing, hydrothermal technique is combined with anaerobic digestion will have wide application prospect.
According to oxidizer whether, sludge water heat treatment technics can be divided into thermal hydrolysis and hydrothermal oxidization two type, and hydrothermal oxidization can also promote oxidation operation and transform to small molecular organic acid while broken born of the same parents.
Sludge water thermal treatment unit has the various structures forms such as tubular type, tower, autoclave, and wherein tank reactor structure is simple, is easy to engineer applied.In operation scheme, hydrothermal treatment process can be divided into intermittent type, semibatch and continous way, current batch process is comparatively extensive, namely a certain amount of mud adds in reactor, for some time is kept under a constant temperature, press strip part, mud is escaped and enter the next cycle of operation, this mode complicated operation, efficiency are low, poor stability again.And current existing continous way device, owing to can not realize good mud-water separation effect, make solid particulate in water outlet comparatively large, the impact for subsequent technique, pipeline and equipment is larger.
Summary of the invention
For the deficiency of existing sludge water thermal treatment unit, the invention provides a kind of continous way sludge water thermal treatment reactor device, this device makes the mud after hydro-thermal reaction realize mud-water separation to greatest extent by gravity settling, reduce the solid content in water outlet, thus in minimizing water outlet particle on the impact of subsequent technique, pipeline, equipment, meanwhile, energy consumption is decreased.
Sludge water thermal response kettle device provided by the invention mainly comprises: kettle 1, kettle cover 6, water conservancy diversion inner core 2, agitator 3 and storage mud tank 5; Described kettle forms the pressure-bearing wall of reactor; Described kettle cover is provided with water outlet 14; Described water conservancy diversion inner core is upper cover and wall seals, bottom is hollow cylinder, and upper cover place has mud import 11, steam inlet 12 and oxidant inlet 13 to connect into water conservancy diversion inner core by kettle cover, and each import joint and upper cover, kettle cover are fixed seal connection; Described agitator is positioned at kettle cover and water conservancy diversion inner core central authorities; Described storage mud pot bottom is the conical surface of 30 ° ~ 60 °, avoids forming dead angle during mud emission, has slurry outlet 15 bottom it.
Further, sludge water thermal response kettle device of the present invention also comprises dissipation plate 4, and described dissipation plate is fixedly connected on water conservancy diversion inner core end.
Along being straight tube under the cylinder body bottom of water conservancy diversion inner core, also can have chamfering to the inside, chamfering≤90 °, preferably there is the chamfering of 15 ~ 60 ° to the inside.
Storage mud tank can be independent with kettle, and storage mud tank and kettle, by one section of circular pipe communicated, also can directly be connected with autoclave body bottom; Preferably independent with kettle.
In described device, fluid can be divided into by flow region: mixing zone 7, waste of energy district 16, laminar region 8, water outlet heat insulation wall 9, Chu Ni district 10.
Agitator is positioned at the region on water conservancy diversion inner core inside, dissipation plate, and its blade can be one-level, and can be also multistage distribution, blade progression be determined according to kettle height; During multistage distribution, one-level blade is near mud, steam, oxidant inlet place, and it act as breaks up bulk mud, and each material is tentatively mixed; Secondary and above blade then make material fully mix in mixing zone.Mixing zone is the region of water conservancy diversion inner core internal stirrers effect; It act as formation complete mixing region, makes each material, reactive component fully mixes fast, add quality and the transmission ofenergy of fast response, thus improves hydro-thermal reaction efficiency.
Dissipation plate is positioned at water conservancy diversion inner core end, is fixedly connected with by this area usual way with water conservancy diversion inner core, and its zone of action is called waste of energy district; Dissipation plate is installed on the round wall with water conservancy diversion inner core, and single dissipation plate shape can be the shape such as rectangle or waviness, combines and can adopt axially fan-shaped distribution, or axial arbitrary placement's mode such as parallel distribution; Because mixing zone exists very strong shear-stress under agitator effect, form strong turbulence flowing, thus affect the sedimentation of particle at autoclave body bottom with concentrated, the effect of dissipation plate is the rubbing effect by its wall and fluid, consumes Turbulent Kinetic; In theory, dissipation plate surface-area is larger, and its dissipation capabilities is stronger, and get final product control table size by control dissipation plate quantity and dissipation plate shape, dissipation plate surface-area size should carry out choose reasonable according to the stirring intensity of target operating condition; By the effect of dissipation plate, ensure that its lower end is stably stratified flow flowing, thus ensure the sedimentation of particle in this region.
At water conservancy diversion inner core end, corner upwards flows by flow field, i.e. water outlet heat insulation wall district, and flow velocity increases, and has the risk of being taken out of by particle, therefore under water conservancy diversion inner core, edge arranges chamfering to the inside, flow field turning amplitude can be slowed down, make flow field velocity slowly increase simultaneously, form a buffering transitional region, the possibility that further reduction particle is taken out of by fluid, thus realize mud-water separation better.
Water outlet heat insulation wall is the region between water conservancy diversion inner tank theca and kettle pressure-bearing wall, water outlet after fluid flows through this region on kettle cover flows out, high-temperature water outlet forms a heat insulation wall in this region, reduces water conservancy diversion inner core interior region heat to the heat lost by radiation outside kettle, thus reduces energy consumption.
Chu Ni district is the region of a buffering, storage granules solid, and sexual refractoriness performance period, spoil disposal, avoided frequent spoil disposal on the impact of system; Reaction residues stops for a long time in this region, is formed the mud of higher concentration by Compression Settlement, and mud is discharged from bottom slurry outlet, is the conical surface of 30 ° ~ 60 ° bottom Chu Ni district, avoids forming dead angle during mud emission.Chu Ni district can adopt and independently store up mud tank with kettle, and storage mud tank and kettle pass through one section of circular pipe communicated, effectively can weaken two interregional heat transmission, flow field disturbance; Based on this advantage, storage mud tank can be designed as large volume tank body, and the spoil disposal intermittent time of this structural response still is long, and operation stability is strong.Except employing and kettle independently store up except mud tank, Chu Ni district can also be directly the region be connected with autoclave body bottom, and now, this region is storage mud tank, and granular solids is deposited on storage mud tank, is discharged by the outlet of storage mud slush; This project organization is simple, but storage mud volume is less, needs spoil disposal or continuously spoil disposal more frequently.
By structure provided by the invention, improve the fluidised form in reactor, be conducive to the sedimentation of particle and realize the enrichment of particulate matter, mud-water separation can be realized well, and can run continuously, substantially increase the processing efficiency of mud, the present invention simultaneously passes through the design of water conservancy diversion inner core and water outlet, form water outlet heat insulation wall, improve the mass transfer of reaction, heat transfer efficiency, reduce the heat lost by radiation of kettle.
Accompanying drawing explanation
Fig. 1 is the heat treated reactor device of sludge water of storage mud tank and kettle one.
Fig. 2 is the heat treated reactor device of sludge water with independent storage mud tank.
Fig. 3 is the three-dimensional view of dissipation plate, and wherein single dissipation plate is rectangle, along kettle axially fan-shaped distribution.
Fig. 4 is the three-dimensional view of dissipation plate, and wherein dissipation plate is waviness, along kettle axially parallel distribution.
Numerical markings in accompanying drawing is respectively:
1: kettle; 2: water conservancy diversion inner core; 3: agitator; 4: dissipation plate; 5: storage mud tank; 6: kettle cover; 7: mixing zone; 8: laminar region; 9: water outlet heat insulation wall; 10: Chu Ni district; 11: mud import; 12: steam inlet; 13: oxidant inlet; 14: water outlet; 15: slurry outlet; 16: waste of energy district.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
As shown in Figure 1, a kind of continous way sludge water thermal treatment reactor device, mainly comprises kettle 1, kettle cover 6, water conservancy diversion inner core 2, agitator 3 and storage mud tank 5 to embodiment 1; Kettle flow region is divided into mixing zone 7, laminar region 8, water outlet heat insulation wall 9, Chu Ni district 10; Described kettle forms the pressure-bearing wall of reactor; Described kettle cover is provided with water outlet 14; Described water conservancy diversion inner core is upper cover and wall seals, bottom is hollow cylinder, and there are mud import 11, steam inlet 12 and oxidant inlet 13 in water conservancy diversion inner core upper cover and kettle cover place; Agitator 3 is positioned at kettle cover central authorities, and the stir shaft of mud import 11, steam inlet 12, oxidant inlet 13 and agitator stretches into mixing zone 7 by kettle cover, water conservancy diversion inner core 2 upper cover, and kettle cover, upper cover joint adopt nut mode connect and seal; Agitator 3 has one-level blade; Storage mud tank 5 is connected with autoclave body bottom, storage mud tank top and autoclave body bottom equal and opposite in direction, and storage mud pot bottom is cone surface, and tapering is 60 °, and slurry outlet 15 is established in bottom, and now laminar region 8 and Chu Ni district 10 are without obvious line of delimitation.
Embodiment 2
As shown in Figure 2, repeat no more with embodiment 1 something in common, difference is:
Comprise dissipation plate 4 further, as shown in Figure 3, dissipation plate 4 has 3 pieces, is often block-shapedly rectangle, and along kettle axially fan-shaped distribution, dissipation plate is fixedly installed in water conservancy diversion inner core end, and its zone of action is waste of energy district 16.
Along the chamfering be provided with to the inside under the cylinder body bottom of water conservancy diversion inner core, this chamfering is 45 °.
Agitator 3 has secondary blade, and wherein one-level blade is near each material inlet, and it act as to smash mud and mud, steam and oxygenant are tentatively mixed, and secondary blade then makes material fully mix in whole mixing zone, promotes energy exchange, mass transfer.
Be conical surface bottom kettle laminar region 8, tapering is 45 °, and Chu Ni district 10 independently stores up mud tank 5, storage mud tank top is 15 ° of conical surfaces, is connected by pipe with bottom kettle laminar region 8, and storage mud tank bottom is cone surface, tapering is 30 °, and storage mud pot bottom has slurry outlet 15.
Embodiment 3
Repeat no more with embodiment 2 something in common, difference is: dissipation plate 4 has 5 pieces, and every block is rectangle, and along kettle axially parallel distribution; Along the chamfering be provided with to the inside under the cylinder body bottom of water conservancy diversion inner core, this chamfering is 15 °; Storage mud tank bottom is cone surface, and tapering is 45 °.
Embodiment 4
Repeat no more with embodiment 2 something in common, difference is: along the chamfering be provided with to the inside under the cylinder body bottom of water conservancy diversion inner core, this chamfering is 60 °.
Embodiment 5
Repeat no more with embodiment 2 something in common, difference is:
As shown in Figure 4, total dissipation plate 7 pieces, the shape of every block is waviness, and along kettle axially parallel distribution.Along the chamfering be provided with to the inside under the cylinder body bottom of water conservancy diversion inner core, this chamfering is 90 °.
The working process of this device is as follows: mud, steam, oxygenant enters mixing zone 7 from respective import respectively, the present invention's oxygenant used can adopt hydrogen peroxide solution, purity oxygen or air, the raw reaction of each material abundant hybrid concurrency under the effect of agitator 3, fluid passes downwardly through waste of energy district, Turbulent Kinetic is dissipated under dissipation plate 4 acts on, fluid flows in laminar region 8, stable flowing is slowly conducive to realizing solid-liquid separation, the wherein downward sedimentation of solid particulate enter Chu Ni district 10, liquid and can not the partial particulate of sedimentation upwards flowing along water outlet heat insulation wall 9, flow out eventually through the water outlet 14 on kettle cover.Solid particulate slowly compresses the mud forming higher concentration in Chu Ni district 10, then is discharged by bottom slurry outlet 15 cyclical intermission, and Chu Ni district volume is larger, then the spoil disposal resting period is longer, is more conducive to the continuous operation of solid-liquid separation and device.
Embodiment 6
Adopt the device process excess sludge that embodiment 1 provides, treatment effect is as follows:
As a treatment effect case of the present invention, the water ratio 84.2% of handled excess sludge, ash content 45.5%, total carbon (TC) 241 ± 2g/kg.Treatment temp 235 ~ 245 DEG C, residence time 31min, mud compares 1:1 with high-temperature steam flow.Can realize mud-water separation completely under this operating mode, without obvious solid suspended particle in water outlet, water outlet COD is 10248mg/L, and water outlet TN is 2349mg/L.After process, solid is discharged by slurry outlet 15, and after process, solid total carbon (TC) clearance reaches 52.0%.
As a treatment effect case of the present invention, the water ratio 84.2% of handled excess sludge, ash content 45.5%, total carbon (TC) 241 ± 2g/kg.Treatment temp 200 ~ 214 DEG C, residence time 29min, mud compares 1:1 with high-temperature steam flow.Can realize mud-water separation completely under this operating mode, without obvious solid suspended particle in water outlet, water outlet COD is 11672mg/L, and water outlet TN is 2075mg/L.After process, solid is discharged by slurry outlet 15, and after process, solid TC clearance reaches 48.2%.
As a treatment effect case of the present invention, handled excess sludge water ratio 84.0%, ash content 45.5%, total carbon (TC) 241 ± 2g/kg.Treatment temp 160 ~ 168 DEG C, residence time 29min, mud compares 2:1 with high-temperature steam flow.Can realize mud-water separation completely under this operating mode, without obvious solid suspended particle in water outlet, water outlet COD is 7969mg/L, and water outlet TN is 1467mg/L.After process, solid is discharged by slurry outlet 15, and after process, solid TC clearance reaches 42.5%.
As a treatment effect case of the present invention, handled excess sludge water ratio 84.2%, ash content 45.5%, total carbon (TC) 241 ± 2g/kg.Treatment temp 126 ~ 140 DEG C, the residence time 28 ~ 34min, mud compares 3:1 with high-temperature steam flow.Can realize mud-water separation completely under this operating mode, without obvious solid suspended particle in water outlet, water outlet COD is 4557 ~ 5055mg/L, and water outlet TN is 819 ~ 956mg/L.After process, solid is discharged by slurry outlet 15, and after process, solid TC clearance reaches 20.6 ~ 21.6%.
Claims (5)
1. a continous way sludge water thermal treatment reactor device, comprise: kettle (1), agitator (3), kettle cover (6), it is characterized in that, also comprise: water conservancy diversion inner core (2) and storage mud tank (5), described kettle cover is provided with water outlet (14); Described water conservancy diversion inner core is upper cover and wall seals, bottom is hollow cylinder, and upper cover place has mud import (11), steam inlet (12) and oxidant inlet (13) to connect into water conservancy diversion inner core by kettle cover; Described agitator is positioned at kettle cover and water conservancy diversion inner core central authorities; Described storage mud pot bottom is the conical surface of 30 ° ~ 60 °, has slurry outlet (15) bottom it.
2. continous way sludge water thermal treatment reactor device according to claim 1, it is characterized in that, also comprise dissipation plate (4), described dissipation plate is positioned at water conservancy diversion inner core end.
3. continous way sludge water thermal treatment reactor device according to claim 1 and 2, is characterized in that, along the chamfering preferably had to the inside under the cylinder body bottom of described water conservancy diversion inner core (2).
4. continous way sludge water thermal treatment reactor device according to claim 1 and 2, is characterized in that, described storage mud tank (5) is preferably independent with kettle.
5. continous way sludge water thermal treatment reactor device according to claim 3, is characterized in that, described storage mud tank (5) is preferably independent with kettle.
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| CN201510085553.6A CN104710093B (en) | 2015-02-17 | 2015-02-17 | Continuous sludge hydro-thermal treatment reaction kettle device |
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| CN201510085553.6A CN104710093B (en) | 2015-02-17 | 2015-02-17 | Continuous sludge hydro-thermal treatment reaction kettle device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732186A (en) * | 2016-12-01 | 2017-05-31 | 西安交通大学 | Reactor, the continous way system and method for hydro-thermal dewater treatment high-moisture percentage organic matter |
| CN108426934A (en) * | 2018-06-11 | 2018-08-21 | 遵义师范学院 | A kind of pollutant chemistry oxygen demand apparatus for automatically measuring and its assay method |
| CN109250879A (en) * | 2018-10-25 | 2019-01-22 | 北京高能时代环境技术股份有限公司 | A kind of hydro-thermal reaction atmosphere improves the processing method of sludge fuel |
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| CN104193132A (en) * | 2014-09-15 | 2014-12-10 | 中国科学院重庆绿色智能技术研究院 | Novel method for treating sludge through steam heat leaching |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106732186A (en) * | 2016-12-01 | 2017-05-31 | 西安交通大学 | Reactor, the continous way system and method for hydro-thermal dewater treatment high-moisture percentage organic matter |
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| CN108426934A (en) * | 2018-06-11 | 2018-08-21 | 遵义师范学院 | A kind of pollutant chemistry oxygen demand apparatus for automatically measuring and its assay method |
| CN108426934B (en) * | 2018-06-11 | 2023-10-20 | 遵义师范学院 | Automatic measuring device and measuring method for chemical oxygen demand of pollutants |
| CN109250879A (en) * | 2018-10-25 | 2019-01-22 | 北京高能时代环境技术股份有限公司 | A kind of hydro-thermal reaction atmosphere improves the processing method of sludge fuel |
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